Bought one of these things last year for $32 free shipping via ebay after watching a youtube video of a kid douse this speaker with a hose.
Brought it with me on every river trip since then, prob about a dozen or so and she is still going strong. Just got an e-mail from ebay and they're now on sale for $24 with free shipping.
Needless to say I'm getting another couple of them. Figured I'd pass it along
Heres the link to the auction